K-9 Mail

Mozilla Thunderbird

About this app

K-9 Mail is an open source email client that works with basically every email provider.

Features

* supports multiple accounts
* Unified Inbox
* privacy-friendly (no tracking whatsoever, only connects to your email provider)
* automatic background synchronization or push notifications
* local and server-side search
* OpenPGP email encryption (PGP/MIME)

Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.


Support

If you're having trouble with K-9 Mail, ask for help in our support forum at https://forum.k9mail.app


Want to help?

K-9 Mail is a community developed project. If you're interested in helping to improve the app, please join us! You can find our bug tracker, source code, and wiki at https://github.com/thunderbird/thunderbird-android
We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.

Ratings and reviews

9/30/24 1 star. Stopped working. No longer works with self signed certificates. And maybe has issues with older security protocol. No option provided to allow acceptance/by-pass the way we can on a browser. 9/23/22 4 Star. Has been working fine on new phone. I've setup ssh tunnel and access email via port forwarding. This has no impact on this app function. I got dozens of email boxes setup. Multiple signatures. Many alias email addresses. Multiple biz brands and domains.

It crashed many times during setup. Can't get passed setup. Edited: After numerous attempts I identified the step at which the setup was crashing. After typing